Wire-clamp for insulators.



0. GIOVANNONI. WIRE CLAMP FOE INSULATORS. APPLIQATION FILED 'JAKLIZ, 1914.

Patented N0v.'24, 1914.

.FFKCE.

' CHARLES GIOVANNONI, F ENTERPRISE, OREGON.

WIRE-CLAMP FOB INSULATORS.

Specification of Letters Patent. Pat-gm-tgol BIQVQ 24, 1914 Application filed January'12, 1914:. Serial No. 811,715.

To all whom it may concern:

Be it known that 1, CHARLES GIOVANNONI, a citizen of the United States, residing at Enterprise, county of W'allowa, and State of Oregon, have. invented certain new and useful Improvements in Wire-Clamps for Insulators, of which the following is a specification.

This invention relates to wire clamps for I insulators.

My invention relates to that class of devices used in connection with electrical insulators for affording a quickly applied and secure means for connecting an electric conductor, whether telegraph, telephone or power wire, to the insulator without hava,

ing to resort to the old style of tie wire twisted around the conductor.

My object is to provide an improved wire clamp of few parts, simple, inexpensive,

strong and durable construction wherein wire clamp plates, a yoke, and an abutment block are of improved construction and combined together in a novel manner, permitting rapid and easy attachment to the insulator and coiiperation with the groove in said insulator and with the conductor Wire to hold the conductor securely to the ..insulator and permit it to beeasily applied or removed therefrom. I

One'embodiment of the invention is set forth fully hereinafter and the novel features are recited in the appended claims.

In the accompanying drawings: Figure 1 is a plan View showing parts of the device in section and illustrating it as applied to an insulator which is in section; Fig. 2, a

detail vertical section taken through the center of the clamp plates, showing the coil spring; Fig. 3, a similar view taken through the end parts of the clamp plates, showing the springy lips; Fig. 4, "a view looking toward the inside of one of the clamp plates; Fig. 5, a detail perspective of the yoke; and

Fig. '6, a similar view of the clamp plateand abutment member.

posed between the clamp plates, and preftened by arivet 8 plates,

. tor.

-' to slip on the insulator.

ei'ably secured to one of them, as for instance, the outer plate, and at a point intermediate the length thereof is a coil spring 6. The coil spring 6 is under compression when the clamp plates are clamped against the conductor wire which is shown at 7, but when said clamp plates are loosened, the spring 6 spreads them apart, permitting the conductor to be easily inserted between the clamp plates or removed therefrom. The supplemental springs 5 assist the coil spring 6 in the aforesaid operation and, due to the location of these spring devices 5 and 6, the clamp plates are substantially uniformly spaced when the said plates are released from tension. 1 do not limit myself, however, to the number, location, or form of thesprings 5 and 6, except where specified in the claims. I may dispense with the lips 5 or, if they are used, provide lips which are of a small amount or practically no re- -siliency and merely use them as spacing devices subject, however, to yield when the clamp plates are tightened against the conductor. A11 abutment member 8'is suitably fasto one of the wire clamp the said abutment member being substantially semi-circular in form and provided with an internal ridge or rib 9 which is adapted to fit in the groove of the insula- This abutment member grooves 10 in line with the rib 9.

A U-shaped yoke 11 whose intermediate arched part is adapted to lie in the groove of the insulator, has legs which are received in the grooved parts 10 and whose extremihas outer ties are screw-threaded at 12 and pass if 'completely embrace the insulator and engage the circumferential groove thereof, when the device is clamped in position, and it is therefore impossible for the wire clamp The wing nut 15 serves the double purpose of clamping the plates 1 and 2 on the conductor and of clamping the yoke and the abutment member around the insulator.

With the present invention, the old form of tie wire is entirely eliminated and telephone, telegraph or other electric conductors may be quickly and easily attached to their insulators, or replaced or repaired.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is i 1. In a wire clamp, the combination of clamp plates'adapted to open and close and to engage a conductor, spring means adapted to open said clamp plates, spacing devices interposed between the clamp plates and 7 adapted to facilitate the ,opening' action of aforesaid.

'member attached thereto and having free,

oppositely extending, parts adapted to engage-the groove of an insulator on one side of the latter, and a yoke adapted to engage said groove on the opposite side of the insulator, said yoke being connected to the clamp plates and adapted to interlock with the free parts of the abutment member beyond the clamp plates and at the side of the insulator.

4. Ina wire clamp, the combination with clamp plates, of an arc-shaped abutment member carried by one of said plates and having free oppositely extending parts WhiCh hELVG an internal rib adapted to enter the groove of an insulator and are provided with external grooves, and a securing yoke engaged with the clamp plates, said yoke being adapted to engagethe groove of the insulator on the-opposite side thereof from the abutment member and having its legs lying in the grooves in the free parts of the abutment member.

In testimony whereof, I hereunto aflix my signature in presence of two Witnesses.

CHARLES GIOVANNONI.

Witnesses:

Josnr BAUER,

ALBERT S, COOLEY. 

